Dumping hoist for motor vehicles



Jan. 16, 1923.

H. F. RIOPELLE.

DUMPING HOIST FOB MOTOR VEHICLES. FILED MAR. 5, 1921- 3 SHEETS-SHEET 1-A TTORNE Y.

Jan. 16, 1923.

H. F. RIOPELLE.

DUMPING HOIST FOR MOTOR VEHICLES.

3 SHEETS SHEET 2.

FILED MAR. 5,1921.

INVENTOR. 11a fry I Rio 522a A TTORNEY;

Jan. 16, 1923. 1,442,095. H. F. RIOPELLE.

DUMPING HOIST FOR MOTOR VEHICLES.

men MAR. 5. I92]- 3 SHEETS-SHEET s.

ATTORNEY.

mechanism fonthe hoist,

Patented Jan. 15, 1923,

UNITEDYZSTATES PATENT OFFICE;

HARRY F. RIOPELLE, OF EGORSE, MIfCHIGAN.

D MPING HoIs'r FOR oron V HICLES.-

Application filed'March 5, 1921 serial No. 44917 53. i

To all whom it may concern Be it known that I, HARRYF. RrornLLn,

a citizen of. the United States, 'residin at,

Ecorse, in the county of Wayne and tate of Michigan, have invented a newanduse ful Dumping Hoistfo r Motor Vehicles, of which the following is'a specificatlon, v This invention relates to holst mecha-' nisms fordump trucks, and more particu-v larly to mechanisms actuable by the maindrive shaft of a motor truck for hoisting the load box of said truck todumping the clutch and then applies the braketo maintain the raised.position ofthe "load box while its contents are discharging;

A further. object of the invention is to provide for a certain lostmotion in the actuating connection for the clutch, so that when the loadbox is to be lowered the brake may be released by said common'actuatingmember without shifting the clutch from its" from the forward end ofthe. box 2 at-each non-drive posit-ion. a

A preferred embodiment of the invention is illustrated in theaccompanying drawing, wherein,

Fig. 1 is a view in sideelevation of a motor dump truck equipped withsaid hoist mechanism, the normal lowered position of the load box being,shown in full lines and the raised position in dash lines.

Fig. 2 is a crosssection taken on" line 22 of Fig. 3, showing the hoistmechanism; Fig. 3 is an elevation of said mechanism, partially insection, the plane of section being indicated at 3-3 in Fig. 2.

Fig. 4 is a perspective view of the brak Fig. 5 is a detail perspectiveview of the clutch control mechanism. "In these views the referencecharacter 1. designates the frame of a motor dump truck, 2

'journale'd at its rear end axially in the cas to .be wound thereupon,said cables extendthis drive, there is provided 'upon f't he' shaft- & asliding clutch collar 20 carrying headed 'furcated lower end. thefurcation s 25 of the load box of said truck pivoted} at its rear endupon said frameas indicated at 3, and 4 isthe drive shaft of the truckdriven by the motor thereof (not shown). A. cross bar 5extending betweenthe side rails of the. framesupports acircular gear casing .6, whichcasing is surmounted by a standard 7 bracedby members 8 inclining fromthe upper end of said standard to-said side rails" of the frame. *Athirdinclined brace member 9 extends forwardly/from the" top of said standardtothe frame 1. 'lOf 1s a shaft counter to: thefdrive shaftd,

ing 6 and at its forward end .in'a bracket 10', Inounted upon thefraxne.Said coun tor-shaft is adapted "to'be driven from the shaft 4 throu h achain 11 mounted upon sprocket whee s 12 and 13, the former fast isloosely mounted upon the counter-shaft! l0 and is adapted to bedriven'fromthe counter-shaft throughfa train of planetary reduction gearing 15such as will insurea moderate speed for said drum, Two' cables I 16aresecured to the periphery of said. drum ing upwardly respectively topulleys 17" mounted upon the ends of anequalizing'bar l8 centrallypivotally mounted upon -the upper end of thestand'ard' 7. After passingover said pulleys the cables 16' are extended downwardly'jandrespectively terminally secured to arms 19 rigidly-depending and the'forward end of theload' box will be I raised. For establishing 1 ordiscontinuing" pins 21v engageable in sockets of the loose sprocketwheel 13 to make said wheel fast upon said shaft. Said collar isannularly grooved for engagement by a forked control arm 22'hung looselyupon'a rockfshaft 23.] A lost motion. actuating means for said arm isformed by an adjacent arm 24* mounted fast upon said roclnshaft andhaving a-biwhich project laterally, one at each side ofthe control arm22,'and o'ne of said furoa tions carrying an adjusting screw 26'forregulating the amount of lost motion The" rock-shaft 23. further carriesan actuatingj arm 27 fromjwhich acontrol rod 28 is ex? tended upward y ta "handle 29 pivoted v .70 upon the counter-shaft and the-latter looseupon said drive shaft. Intermediate the-j sprocket wheel 12 and casing6a drum 1.4

. pressure through the rod upon the upper end lport-ion off the bracemember 9. To the sprocket wheel 12 there is secured a brake drum 30engageable interiorly by a brake band 31 expansible by means or" arocker cam 32;. Said cam is fast upon a rocker shaftjournale d in thehearing; date It) and further carrvin the actu-v operator; swings thehandle?!) to the raised positionwhich it occupies in the drawings. Theresultmgpull exerted through the rec. 28-,upon the arm 2; rocks theshaft 2?) and after takingup-of the-lost motion between the arms 24 and22 the clutch collar is shifted.t0,engage-its drive pins 21 with thesprocket wheel 13. A driveis .tl'ius i---:tablishedto thecountershait-IO through the cha'indl, and the drum 1% ii-x driven fromthe countershatt through the reduction gearing 15. Theicables 16.winding upon said. drum,raisesathe forward end oi the load-box, anytendencytoward differential stresses in the two cables being overcomeautomatically by a swing-ingot the ego-alto ing bar I "29 is adjusted tothe position;shown in the drawing, but said rod-moves freely through-thearm 33 during this movement without rocking said arm, and. withoutaltering the normal contracted condition of the-brakeband When theload-box has been shifted to the desired inclinatiom the handle 29 isswung to its lower limiting position acting through the rod. 28;; arm27,.-rock-shaft 23'. and arms 2:! and 22 to shift the clutch member 20rearwardly to disengage it frointhe sprocket wheel I and discontinue thedrive-to thedrunrll. While the rod 28 is shifting the clutch member 20asjust-described, the rod l being downwardly shifted, the eli'e merelytotake up i lost 1 mo "oi l withoutatiecting the brake band tinueddownward swinging of the stresses the spring 36, and exerts suc 34. uponthe or as. to rock-the cam132 and-expand the hr handy Thelatteiyqripping thedruni 30 pre vents reverserotation of the drum 14 andunwindingof the; cables 16, so that therelevated positionof the load-boxis. maintained. while its contents; are; d scharging the :operatordsready to aga1n;.lower said box, the handle 29 is raised iv to aninterupwardly and attached in the de 18.- Tlierod dais alsoshi'fted upwardly when the handle,

When.

mediate position, in whichposition the braking pressure is sufficientlyrelieved to allow the box 2 to gradually fall. to its normal position.The upward. swinging of the lever 29 which eiiects a lowering of theload-box does not shift the clutch member 20 from its non-drivingposition, but merely rocks the shaft'23 sufficiently to take up the lostmotion between the arms 24L and 22. The handle 29, when released,maintains said in termediate. position-Kin which no drive is establishedthrough-said clutchand no brakingpressure is applied; i

v The described hoisting mechanism' is adapted tobe controlled in a verysimple -manner and with a .minimum exertion on the part of the driver.Said mechanism fur-- thermore is one th'at permits raising of the truck,of a drive shaft, a counter-shaft, and a drive connection from the driveshaft tosaid countershaft, means operable "for hoisting-the load-box bysaid countersh909i; a clutch controlling said'drive connection, a. brakefor restraining the countershaft, and a common control lever foractuating sail: brakeand clutch having .a lost motion actuatingconnection with said clutch.

9 In a hoist mechanismfo't the character describechthe conjibinationwith the pivotal loadv-box of ajmotor dump truck, 01". a hoistmechanisnrfor ,saidload-hox, a clutch controlling said hoist mechanism,a brake associated with said mechanisnna rock-shaft; a clutcharmjournaledon said shaft and engaging said clutch, a rock arm on saidshaft having a lost motion actuating connection with said clutch arm,and a common control lever. for actu-atingsaid brake and said. rock 1"with the frame and pivotal load-box of a motor dump truck of a standardmounted on said frameiand having the gear cas 1;e "l-with the basethereof. a (r g a pulley at eaeh endthereoii; and ceninountedon saidstandard a she journaled ins case. a drum jour naled on said shaft andformiu t closure for said. gear. case gear i in said .se fortransmitting motion from said-shalt't to drum. a cable carriedupon saidpulley and at tached at its ends to saidv load box andengagedintermediate its ends with said drum to windthereon, and meansfor establishing a drive connection with said shatti cation,

HARRY F.- RIOPELLE.

